has co-authored over 20 books, including the number one New York Times bestseller, Mistaken Identity.  Mark is a true collaborative author, bringing a very personal touch to all his projects. Scroll down for many of Mark's collaborative books. Click the covers to learn more. Mark is represented by 2M Communications. Agents and editors may reach them by clicking the button below. For all other inquiries, please use the contact form on the About page.